In the survey mentioned in paragraph 3, we know that 9.3 percent of the participants ______.
A. used massage therapy in 2002
B. used massage therapy in 2004
C. had used massage therapy at least once
D. used massage therapy in 2001
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From the passage, we know that Facebook is now faced with the problem that ______.
A. less and less people are paying visits to it
B. people are cheating about their real gender on it
C. it is difficult to tell whether an user is male or female
D. users are using impropriate language there
Which one of the following is true about Facebook？
A. The websites are losing their popularity in a gradual way.
B. Registered user's profiles are open to anyone on the internet.
C. Only friends and acquaintances of the users have access to their profiles.
D. The website is in English only since English is a universal language now.
From the passage, we know that the study of massage ______.
A. have not got started yet
B. needs more research on therapy practice
C. can not explain therapy practice at all
D. can provide full explanations for therapy practice
Paragraph 4 is mainly concerned about ______.
A. side effects and risks of massage therapy
B. safety of massage therapy
C. cautions that the therapists need to follow
D. the training processes of a qualified therapists
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